/*
 * Copyright (c) 2015 Typelevel
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package alleycats.tests

import alleycats.std.all.*
import cats.{Eval, Foldable}
import cats.instances.all.*
import cats.laws.discipline.{TraverseFilterTests, TraverseTests}

class IterableTests extends AlleycatsSuite {

  test("foldLeft sum == sum") {
    val it = Iterable(1, 2, 3)
    assertEquals(Foldable[Iterable].foldLeft(it, 0) { case (b, a) =>
                   a + b
                 },
                 it.sum
    )
  }

  test("foldRight early termination") {
    assertEquals(Foldable[Iterable]
                   .foldRight(Iterable(1, 2, 3), Eval.now("KO")) {
                     case (2, _) => Eval.now("OK")
                     case (a, b) => b
                   }
                   .value,
                 Eval.now("OK").value
    )
  }

  checkAll("Traverse[Iterable]", TraverseTests[Iterable].traverse[Int, Int, Int, Set[Int], Option, Option])

  checkAll("TraverseFilter[Iterable]", TraverseFilterTests[Iterable].traverseFilter[Int, Int, Int])
}
